Asked by: Clotilde Eichmann

How long would you live if the Sun went out?

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You might be able to survive for a bit longer than you think. If the sun suddenly blinked out of existence, you'd have nothing to worry about — for the first eight minutes, anyway. After that, all hell would likely break loose. Read more

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How long could you survive if the Sun went out?

A relatively simple calculation would show that the Earth's surface temperature would drop by a factor of two about every two months if the Sun were shut off. The current mean temperature of the Earth's surface is about 300 Kelvin (K). This means in two months the temperature would drop to 150K, and 75K in four months.

How fast would we die if the Sun went out?

If the sun were to explode it would take around 134 days for the shock wave to reach Earth. But the neutrinos and radiation travel at the speed of light and would reach us in 8 minutes and we would all die.

Can you live without the Sun?

All plants would die and, eventually, all animals that rely on plants for food — including humans — would die, too. While some inventive humans might be able to survive on a Sun-less Earth for several days, months, or even years, life without the Sun would eventually prove to be impossible to maintain on Earth.

What if the Sun disappeared for 5 seconds?

Consider this: if the sun was to disappear for exactly five seconds it would be 8.2 minutes AFTER the fact before anyone on Earth would even know that it had happened, so by the time we were aware the event would have passed.

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Most frequently asked questions

How long will the Earth last?

By that point, all life on Earth will be extinct. The most probable fate of the planet is absorption by the Sun in about 7.5 billion years, after the star has entered the red giant phase and expanded beyond the planet's current orbit.

What if the sun went out for a second?

If the sun disappeared for ONLY ONE SECOND, nobody would notice anything other than no light for a single second. Nothing else. Our orbit would change by less than 1 Km as I've shown.

How cold would Earth be without the sun?

And without sunlight, the Earth would get very, very cold. Earth's surface temperature now averages about 57 degrees Fahrenheit, but by the end of the first week without the sun, the average surface temperature would be below the freezing point.

Can we live without the moon?

It is the pull of the Moon's gravity on the Earth that holds our planet in place. Without the Moon stabilising our tilt, it is possible that the Earth's tilt could vary wildly. It would move from no tilt (which means no seasons) to a large tilt (which means extreme weather and even ice ages).

Could the Sun burn out?

In about 5.5 billion years the Sun will run out of hydrogen and begin expanding as it burns helium. It will swap from being a yellow giant to a red giant, expanding beyond the orbit of Mars and vaporizing Earth—including the atoms that make-up you.



How Long Would We Have to Live if the Sun Went Out?

How is the Earth without sunlight?

Without the Sun's heat and light, the Earth would be a lifeless ball of ice-coated rock. The Sun warms our seas, stirs our atmosphere, generates our weather patterns, and gives energy to the growing green plants that provide the food and oxygen for life on Earth.

What if the Sun stopped shining?

With no sunlight, photosynthesis would stop, but that would only kill some of the plants—there are some larger trees that can survive for decades without it. Within a few days, however, the temperatures would begin to drop, and any humans left on the planet's surface would die soon after.

What if the Sun exploded?

The good news is that if the Sun were to explode – and it will eventually happen – it wouldn't happen overnight. ... During this process, it will lose its outer layers to the cosmos, leading to the creation of other stars and planets in the same way that the violent burst of the Big Bang created Earth.

What if Earth had two moons?

If Earth had two moons, it would be catastrophic. An extra moon would lead to larger tides and wipe out major cities like New York and Singapore. The extra pull of the moons would also slow down the Earth's rotation, causing the day to get longer.

What if Moon hit Earth?

Once the Moon began it's trajectory towards the planet, it would increase the tidal impact it has on us. By the time it hit the Roche limit, it would be causing tides as high as 7,600 meters (30,000 feet). Our world would be devastated by an army of tsunamis – ten times a day.

What if the sun goes out for 24 hours?

If the sun disappeared, the day would bleed into night in about 8.5 minutes, the time it takes for the sun's light to reach us here on Earth [sources: Otterbein, EarthSky]. The cold spell would be less severe and not as immediate as the shift to near darkness.

What would happen if the moon exploded?

If the moon exploded, the night sky would change. We would see more stars in the sky, but we would also see more meteors and experience more meteorites. The position of the Earth in space would change and temperatures and seasons would dramatically alter, and our ocean tides would be much weaker.

What if the Sun disappeared for 5 minutes?

As soon as the last of the sun's light reached us – eight-and-a-half minutes after the sun itself disappeared – the sun would blink out and night would fall over the entire Earth. ... So Earth would be traveling at the same speed as always into eternal night.

How long could you breathe on Mars?

About 15 seconds. The main problem is not that there is no oxygen, but there is no pressure. The atmosphere on Mars is less than 0.1 psi.

How old is the world?

Today, we know from radiometric dating that Earth is about 4.5 billion years old. Had naturalists in the 1700s and 1800s known Earth's true age, early ideas about evolution might have been taken more seriously.

How cold can the Earth get?

The lowest natural temperature ever directly recorded at ground level on Earth is −89.2 °C (−128.6 °F; 184.0 K) at the Soviet Vostok Station in Antarctica on 21 July 1983 by ground measurements.

What year will the sun explode?

After the sun has burned through most of the hydrogen in its core, it will transition to its next phase as a red giant. At this point roughly 5 billion years in the future, the sun will stop generating heat via nuclear fusion, and its core will become unstable and contract, according to NASA.

What is a dead star?

Dead stars

White dwarfs are Earth-sized remnants of ordinary stars like our Sun. About 95% of the stars in the Milky Way will eventually become white dwarfs. ... When these heavier fuels run out, the Sun will collapse into its final white dwarf state.